Tag Archives: nesting materials

Brett Madden, Aviaway
Bug Bytes

Strategies and Building Design Improvements to Help Prevent Birds

By R. Brett Madden
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Brett Madden, Aviaway

Bird droppings and nesting materials, if allowed to accumulate over time, can cause severe damage to building facades, ledges, loading docks, walkways, roofs and more. Building materials such as stone, wood and metal can be damaged due to the acidity of the bird droppings. And in extreme cases, a buildup of bird droppings can impact the structural integrity of a structure. Also, roof drains can become clogged, and fire hazards from packed nesting materials around electrical fixtures can develop. Not to mention all the possible diseases that can result from disturbing bird droppings! Rather than waiting until these bird problems develop and result in potentially expensive remediation, in most cases, it will be cheaper to consider bird prevention design elements beforehand—specifically, in the design-build stage (ideally) or the retrofit stage (alternatively).

Before we can review the building design elements, it is best to review the types of areas that birds prefer to land, roost and nest. This way, when considering a design element, considering the kinds of spaces they prefer to set up camp will make more sense.

  • 90-Degree Ledges
    • Building ledges
    • Decorative elements
    • Truck bay bumpers
  • Knee Walls (parapet ledges)
    • Typical construction around most commercial buildings
    • Roof structure types
    • Flat based surface areas
  • Covered Overhangs
    • Loading docks
    • Building canopies
    • Interior building structures
  • Roofing Equipment
    • Under HVAC units
    • Ductwork
    • Roof equipment
  • Water Sources
    • Retention ponds
    • Decorative fountains
    • Any water source (natural or otherwise)
  • Food Sources
    • Fruit trees
    • Trash removal
    • Container practices
    • Proximity to building
  • Light Fixtures and Electrical Items
    • These items provide warmth
    • These items provide elevated areas to survey area and avoid predators

In the design-build phase of the project, when we work with architects, we always recommend decreasing the number of 90-degree ledges or reducing the ledge depth surface area as much as possible. In those areas that we are not able to reduce or eliminate the ledge, we would recommend a landing-based deterrent product such as a bird spike, bird wire, ledge exclusion system or electrified shock-based bird control product. Each of these types of bird deterrent items has different pros and cons.

Bird spikes, Aviaway
Bird spikes (All images courtesy of Aviaway Bird Control Services & Consulting)

Bird Spikes

Bird spikes are a type of bird deterrent/and anti-roosting device that will make it hard for a bird to land on a leading ledge and close its wings as it walks onto the ledge surface. When a bird’s landing process is made more difficult, combined with a reduction of the surface landing area, the birds will be deterred from the leading ledge area. Most types of bird spikes have thin metal/plastic rods that are attached to a solid base that point in an upward direction. Bird spikes come in various widths depending upon the surface ledge width area. Bird spikes can be mounted to just about any ledge/surface. Bird spikes can be installed on numerous types of building ledge types and sizes. Bird spikes can be an effective deterrent on gutters, signs, rooflines, cameras, pipes, parapet/knee walls, and related building surfaces.

A con of using bird spikes is that bird spikes are primarily designed to deter larger birds like pigeons. Smaller birds such as sparrows or starlings will not be deterred with bird spikes. A smaller bird can move within and around the rods to use the rods to hold nesting materials within the strands of rods to hold their nesting materials within the bird spike to create a nest. Another con is that larger quantities of bird spikes are unappealing to the building aesthetics.

Bird wire

A bird wire system is a combination of stainless-steel posts that are either epoxied or tapped and drilled into the surface area (typically mortar lines/joints). After the stainless-steel post is mounted, a thin monofilament stainless steel wire is secured between the posts with a micro-spring. The wire is tensioned between the two posts. As pigeons or larger birds attempt to land on treated areas, they will not be able to close their wings and thus will be deterred from landing on treated areas.

A con of using bird wire is that it is typically only effective against larger birds.

Ledge exclusion
Ledge exclusion

Ledge Exclusion

The goal is to turn a 90-degree angle into a 45-degree angle. When you have a ledge that has a base landing area and a return wall area, this allows birds a great shelter area and an ability to survey surroundings. By creating a 45-degree angle, you take a bird’s ability to land and get a foothold and land on the surface. The product is effective for larger birds such as pigeons and smaller birds, too.

The only real con of the changing the ledge structure is matching the building finish. However, this is the best bird exclusion method that is effective against all bird species.

Shock Track

Shock track is a low-profile shock track system with a minimalist low profile, and virtually invisible solution to deter and prevent birds from landing, roosting or nesting on building ledge-based surfaces. The shock track system will deliver a mild/startling electric shock when the bird contacts the strip. Shock track systems are a great option when building/structural aesthetics are a key factor for the facility.

For larger areas such as loading docks, canopies, and related covered structures, netting is the main bird exclusion method.

A few cons for a shock system are that at times, you may have some arcing with heavy snow or water collection when connection area of the strips make contact, and this system is typically only effective against larger birds.

Bird netting
Bird netting

Bird Netting

Bird netting is an exclusion method of bird control. It is intended to be installed on buildings, loading docks, warehouses, airport hangers, transportation facilities, barns, food silos, over building exteriors, balconies, parking garages, rooftops, HVAC units, bridges, agricultural crop applications, ponds, and any other surface that netting hardware can be installed. Bird netting is the best method for excluding all pest bird types. Specifically, seagulls, pigeons, sparrows, starlings, and crows can all be excluded from bird netting.

Bird exclusion netting will prevent birds from gaining entry above any areas that are netted off. It excludes pest birds from roosting and nesting. There are various types of netting and mesh sizes. When selecting the type of netting and mesh size, it is critical to both the target pest bird and where the netting is being installed.

By far, bird netting the best bird exclusion method to control all bird species. The only con of bird netting is that depending upon the application, and the cost can be expensive.

In conclusion, when considering the design-build phase or a retrofit project, the aforesaid areas that are attractive to birds to land, roost and nest should be considered. In most cases, birds can be prevented with a bit of planning.

Remember to also consider surrounding areas (proximity of birds), acceptable pest bird threshold levels, reducing all food and water sources, and closing off all possible entry points. The goal is to not only prevent the birds from setting up shop on the building, but we want to try to keep them an acceptable distance away, too.

Brett Madden, Aviaway
Bug Bytes

How to Prepare an Integrated Bird Management Audit Program

By R. Brett Madden
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Brett Madden, Aviaway

Birds of different species can become a pest problem depending upon where they are landing, roosting or nesting. In terms of food facilities, birds can cause various concerns: Product safety risks, possible contamination (bird droppings/feathers), poor audit grades, inspection failure, secondary insect pest problems, vectoring of foodborne illness pathogens, plant closures or fines. It is for these reasons that it is essential that food, beverage and product manufacturers (FBP) establish an integrated bird management (IBM) program.

An IBM program will ensure that every essential team member is on the same page in terms of the protocols for managing pest birds within and around the facility. Even if a facility has taken a proactive approach to bird control, the potential exists for birds to enter a facility. Especially considering bird pressures around adjacent properties, buildings, bodies of water and food sources near the facility.

Read Part I of this series: Bird Problems and Control Methods for Food Production FacilitiesIBM for food industry facilities is a systematic approach to preventing birds from gaining access within a facility and reducing the length of time birds remain within a facility. Nuisance birds, depending upon how severe the bird pressure—i.e., how many birds are landing, roosting and/or nesting within a given area—can cause severe damage to equipment, property, food products, displays, vegetation, façade signage, ledges, roofs, HVAC equipment, drains, fire suppression, electrical equipment and more. The longer that birds are permitted to remain within and around a facility, the more damage they can cause, and the harder it is to remedy the problem. Thus, it is critical to remove any birds that have gained entry as soon as possible to prevent possible FBP contamination and the birds getting comfortable within the facility.

There are several components to developing an IBM program. First, you need to conduct a complete inspection of the interior/exterior of the facility, followed by a review of the current data as well as any historical bird data. Now that you have all the raw data, you can begin developing the site-specific IBM plan for the FBP facility. Now that you have the program designed, the program can be implemented. Finally, after a defined timeframe that the IBM program has been active, the program needs to be evaluated to determine if any adjustments need to be made to the program.

Inspection

The first step in developing an IBM program is to conduct an initial site inspection audit of the interior and exterior of the facility.

Integrated bird management, audits, food safety
An example of an integrated bird management food safety audit checklist. Credit: Aviaway

The following various elements need to be inspected and with said findings documented.

Interior audit, pest management
An example of an interior audit spreadsheet. Source: Aviaway. (Click to enlarge)

On the interior of the facility, look at the following items:

  • Active Birds with the Facility
    • List the areas and locations of birds
      • Example: Location(s): Food prep area(s), warehouse, etc.
    • Any history of birds and related areas
  • Interior Landscaping
    • Type(s) and necessity
  • Food Processing Areas
    • Any active control measures in place
    • Assess the level of risk
  • Bay Doors
  • Location(s): Gaps
  • Location(s): Bumpers
  • General Doors
    • Location(s): Gaps
    • Location(s): Bumpers
    • Location(s): Structural
    • Location(s): Doors left open
  • Additional Access Point(s)
    • Check all equipment areas that enter/exit building
  • Pipe-Line Penetrations
  • Sanitation
  • Conductive Conditions
    • Location(s): Standing water
    • Location(s): Food Sources
    • Debris
  • Bird Droppings or Nesting Materials
  • Staff feeding birds
    • All access to food and water
Exterior audit, pest management
An example of an exterior audit spreadsheet. Source: Aviaway. (Click to enlarge)

On the exterior of the facility, look at the following items:

  • Active birds with the facility
    • List the areas and locations of birds
      • Example: Locations(s): Rear loading dock
    • Any history of birds around the exterior of the facility
  • Adjacent Structures
    • Accessory buildings and structures
  • Sanitation Practices (Exterior)
    • Location(s): Dumpsters
    • Exposed food sources and spillage
  • Trash Receptacles
  • Trash Removal Frequency
  • Food Waste on Ground
  • Cleaning Practices
  • Cleaning Practices Schedule
  • Cleaning Food Waste Bins
  • Motion Doors
  • Bay Doors (Exterior)
    • Location(s): Gaps
    • Location(s): Bumpers
    • Location(s): Structural
  • General Doors (Exterior)
    • Location(s) Doors Being Left Open
  • Additional Access Point(s)
  • Bodies of Water
  • Conductive Conditions
  • Structural (Exterior)
    • Location(s): Pipe-Line Penetrations
    • Location(s): Flashing
    • Location(s): Pipes
    • Location(s): Openings
    • Location(s): Roof
    • Location(s): Roof Hatches
    • Location(s): Windows
    • Location(s): Canopy (Front/Rear)
    • Location(s): Awnings (Front/Rear)
    • Location(s): Façade Signage (Front/Rear/Side)
  • Drainage
  • Standing Water
  • Clogged Drains
  • Landscaping
    • Retention ponds
  • Bird Droppings or Nesting Materials
  • Exterior Storage
  • Merchandise Displays
  • Existing Bird Control Devices

Review

Next, after all the above items have been inspected and findings recorded, all the data needs to be reviewed. In addtion, all the current bird management practices within the facility, documentation practices, and current audit/inspection findings should be all evaluated together. All this information is your road map for developing your IBM Program. Make sure that while you are collecting all the said raw data, you also speak with all necessary staff to get the most accurate information possible.

Documentation

Now that you have conducted your inspections and collected all the data, it’s time to create a site-specific IBM Policy & Plan for the facility. The development and implementation of the IBM plan will provide the appropriate procedures that are to be implemented to prevent, control and exclude birds from entering a facility and from keeping birds an acceptable distance away from the facility. With proper training and implementation of IBM procedures, there will be a reduced likelihood that birds will be able to enter the facility, and the length of time birds remain inside the facility will be reduced—thus, reducing the level of pest bird damage caused, reducing hazards to food sources, equipment, the public, and the facility environment.

Each facility is unique in its operation, location and potential for bird activity. The facility’s IBM plan will be designed to factor its control options when remedying and preventing bird pressure.

Implementation

Now that you have an IBM Plan, it’s time to implement the plan. First, make any necessary changes based upon findings of the audit and review of all data. Next, correct any conducive conditions that were discovered during the inspection. All the items that may require adjustment may need to be planned out depending upon budgetary constraints. Define staff roles regarding bird control efforts on a front-line facility level. Each member of the action team must fully understand their role and responsibility about the implementation and day-to-day operation of the plan.

The IBM Plan is the roadmap that should be followed for managing pest birds throughout the interior and exterior of the facility and related structures. It will set forth the facility’s bird threshold levels and site-specific facility needs. Furthermore, the IBM Plan will provide in detail how each phase of the plan will be implemented at each facility. The facility coordinator, in collaboration with the IBM coordinator, shall be responsible for the administration and implementation of the IBM plan. Each of their roles and responsibly should be thoroughly reviewed and understood.

Next, conduct staff training on proper bird control removal methods if handing live removal internally. Otherwise, what are the approved processes for third-party vendors who are providing removal services? Finally, conduct a review of the new documentation process to record all necessary data for the IBM program. Data collection is a critical component in evaluating the success of the plan and determining if any adjustments need to be made.

Evaluation

To ensure goal compliance, the IBM program should be evaluated at each site annually. The review must consist of all records, the number of birds that gained access into the store, corrective actions taken (at the facility level and outside efforts), and any plan adjustments. By reviewing all the data collected, the plan’s effectiveness can be determined, and whether alterations need to be made. Note that the IBM plan is not a static document that sits in a binder. The plan will have to evolve as operations change, or the set goals of the program are not met.

Conclusion

A proactive approach to reducing bird populations is critical for food industry facilities. As such, the IBM program will ensure that your entire staff is adequately trained on all the site-specific bird control methods, reduce the frequency of birds entering the facility and create a documented bird control program that is designed for your specific facility.